What is it about?

511 players have solved 4,383 challenges and gathered 1,133,390 XP so far.

  1. Exciting challenges

    Create an account and try to solve as many challanges as you can. The more you can solve, the more you learn. » let's begin

    • No guessing or remote brute force needed, the title always helps a lot
  2. Detailed explanations

    After you solve a challenge, you can read the detailed explanation of the given vulnerability and instructions on how can you eliminate the problem.

  3. Learn to defense, not to attack

    We would like to make it clear that this site has been created for teaching how to defend and not how to attack. Always wear your white hat and do not destroy or steal anything.

Welcome our newest members: dester,Vibomeept,Kuraomiz,nk14578,neowutNon,Amonmonabow,Dawhun,x0r,AndreErony,jbo,